Keith Urban’s wife, Nicole Kidman, is celebrating a birthday today (June 20), and the singer couldn’t let the day go by without a proper celebration. This time, though, he got fans involved.

During Keith’s headlining set at Country USA 2018 in Oshkosh, Wisc. on Tuesday evening, the singer took a moment to ask for the crowd’s help in singing “Happy Birthday” to his wife. Keith captured the sweet moment on video and sent it to Nicole.

In the video, the “Coming Home” singer conducts the audience in a sing-along of “Happy Birthday” where they substituted Nicole’s name with “Baby girl” in the song. Keith’s pet name for his wife, it was a sweet moment as the crowd sang “Baby girl” and he gave a thumbs up sign.

At the close of the performance, Keith turns the phone camera on himself, sending along a personal message to Nicole: “I love you, baby! Happy birthday,” he adds.

Keith is in the height of festival season and in addition to performing at Country USA 2018, the singer kicked off his 2018 Graffitti U World Tour on Friday (June 19) in in St. Louis. The singer has a few days off, where he’ll likely spend some quality time with his wife, before the tour resumes on Friday (June 22) in Clarkson, Mich. at DTE Energy Music Theatre. The singer’s tour will have him visiting 58 cities during the North American leg of his trek.

In addition to festival appearances and a headlining tour, Keith is set to perform as part of Macy’s 4th of July Fireworks Spectacular. The country singer will join Blake Shelton, Kelly Clarkson and Ricky Martin during the 42nd annual show, which will be broadcast on NBC on July 4.